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GB2393368A - Methods and arrangements in a telecommunication system related applications - Google Patents

Methods and arrangements in a telecommunication system related applications Download PDF

Info

Publication number
GB2393368A
GB2393368A GB0400468A GB0400468A GB2393368A GB 2393368 A GB2393368 A GB 2393368A GB 0400468 A GB0400468 A GB 0400468A GB 0400468 A GB0400468 A GB 0400468A GB 2393368 A GB2393368 A GB 2393368A
Authority
GB
United Kingdom
Prior art keywords
quality
communication
delay
channel
quality values
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0400468A
Other versions
GB0400468D0 (en
GB2393368B (en
Inventor
Johan Sjoeberg
Stefan Bruhn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB0400468D0 publication Critical patent/GB0400468D0/en
Publication of GB2393368A publication Critical patent/GB2393368A/en
Application granted granted Critical
Publication of GB2393368B publication Critical patent/GB2393368B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0019—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0014—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the source coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

In adapting the modes of a codec for a communication channel in a mobile telecommunication system, a delay unit is provided to delay the adaptation if communication conditions of the channel are improving, so that a less robust mode having a higher intrinsic quality is selected only after some delay. Otherwise the adapting is not delayed. This may to some extent reduce the quality of the received speech signal, abut the out-of-phase problems due to AMR loop delay in speech codecs are minimized. In particular in speech codecs built according to the AMR standard. The quality of the communication is measured to give quality values for successive measurement occasions. The quality of the communication is measured to give quality values for successive measurement occasions. The quality values are first linearly filtered. The delay unit comprises a plurality of memory cells (X1, X2, , XM) in a memory (810) for storing the quality values of the communication conditions of the channel for the most recent measurement occasions. A selector (820) operates according to an algorithm (825) for selecting one of the memory cells. The content of the selected cell is used to set the mode of the codec.

Description

GB 2393368 A continuation (74) Agent and/or Address for Service: Marks &
Clerk 4220 Nash Court, Oxford Business Park South, OXFORD, OX4 2RU, United Kingdom
GB0400468A 2001-08-22 2002-08-22 Methods and arrangements in a telecommunication system related applications Expired - Fee Related GB2393368B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0102849A SE0102849D0 (en) 2001-08-22 2001-08-22 Methods and arrangements in a telecommunicaton system
PCT/SE2002/001510 WO2003019850A1 (en) 2001-08-22 2002-08-22 Methods and arrangements in a telecommunication system related applications

Publications (3)

Publication Number Publication Date
GB0400468D0 GB0400468D0 (en) 2004-02-11
GB2393368A true GB2393368A (en) 2004-03-24
GB2393368B GB2393368B (en) 2004-08-04

Family

ID=20285141

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0400468A Expired - Fee Related GB2393368B (en) 2001-08-22 2002-08-22 Methods and arrangements in a telecommunication system related applications

Country Status (6)

Country Link
US (1) US7403892B2 (en)
DE (1) DE10297176T5 (en)
ES (1) ES2264363B2 (en)
GB (1) GB2393368B (en)
SE (1) SE0102849D0 (en)
WO (1) WO2003019850A1 (en)

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FI20021936A (en) * 2002-10-31 2004-05-01 Nokia Corp Variable speed voice codec
GB0323244D0 (en) * 2003-10-03 2003-11-05 Fujitsu Ltd Uplink scheduling
EP1603262B1 (en) * 2004-05-28 2007-01-17 Alcatel Multi-rate speech codec adaptation method
KR20050044837A (en) * 2004-06-08 2005-05-13 삼성전자주식회사 Mobile communication terminal and method for processing communication_function during the outputting of digital_broadcasting_data
SE0402372D0 (en) 2004-09-30 2004-09-30 Ericsson Telefon Ab L M Signal coding
SE528213C3 (en) * 2004-09-30 2006-10-31 Ericsson Telefon Ab L M Procedures and arrangements for adaptive thresholds in codec selection
WO2007034809A1 (en) * 2005-09-20 2007-03-29 Taisho Pharmaceutical Co., Ltd. Host cell for producing recombinant protein
US7720046B2 (en) * 2005-09-23 2010-05-18 St-Ericsson Sa Synchronizing a channel codec and vocoder of a mobile station
US8032370B2 (en) 2006-05-09 2011-10-04 Nokia Corporation Method, apparatus, system and software product for adaptation of voice activity detection parameters based on the quality of the coding modes
US8208516B2 (en) * 2006-07-14 2012-06-26 Qualcomm Incorporated Encoder initialization and communications
US7890072B2 (en) * 2006-09-27 2011-02-15 Silicon Laboratories, Inc. Wireless communication apparatus for estimating(C/I) ratio using a variable bandwidth filter
US8209187B2 (en) * 2006-12-05 2012-06-26 Nokia Corporation Speech coding arrangement for communication networks
FR2922064B1 (en) * 2007-10-05 2011-04-15 Thales Sa METHOD FOR CONTROLLING INTELLIGENT ANTENNAS WITHIN A COMMUNICATION NETWORK
EP2164200B1 (en) * 2008-09-15 2018-01-03 Alcatel Lucent Speech rate control signalling and method thereof
KR101523590B1 (en) 2009-01-09 2015-05-29 한국전자통신연구원 Method for controlling codec mode in All-IP network and Terminal using the same
PL2239973T3 (en) * 2009-04-09 2016-08-31 Airbus Defence & Space Oy Recording communications
US9021342B2 (en) * 2009-10-01 2015-04-28 Stmicroelectronics, Inc. Methods to improve ACS performance
WO2011108964A1 (en) * 2010-03-02 2011-09-09 Telefonaktiebolaget Lm Ericsson (Publ) Source code adaption based on communication link quality and source coding delay.
JP7019561B2 (en) 2016-03-28 2022-02-15 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ Terminal and codec mode switching method

Citations (5)

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Publication number Priority date Publication date Assignee Title
EP0651531A2 (en) * 1993-10-29 1995-05-03 AT&T Corp. Communication technique employing variable information transmission rate function of quality
EP0964540A2 (en) * 1998-05-21 1999-12-15 Texas Instruments Incorporated System for dynamic adaptation of data channel coding in wireless communications
EP0986206A1 (en) * 1998-08-13 2000-03-15 Alcatel A method of changing the encoding level of digital data transmitted between a transmitter and a receiver at a constant rate
WO2000047006A1 (en) * 1999-02-01 2000-08-10 Nokia Networks Oy Adaptation of codec operating modes in a telecommunication network
US6134220A (en) * 1994-04-13 2000-10-17 Alcatel Cit Method of adapting the air interface in a mobile radio system and corresponding base transceiver station, mobile station and transmission mode

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Publication number Priority date Publication date Assignee Title
US5812786A (en) * 1995-06-21 1998-09-22 Bell Atlantic Network Services, Inc. Variable rate and variable mode transmission system
US6167031A (en) * 1997-08-29 2000-12-26 Telefonaktiebolaget Lm Ericsson (Publ) Method for selecting a combination of modulation and channel coding schemes in a digital communication system
US6266342B1 (en) * 1998-04-08 2001-07-24 Nortel Networks Limited Adaption resource module and operating method therefor
US6167259A (en) * 1998-06-19 2000-12-26 Ericsson Inc. System and method of quantifying the degree of balance on forward link and reverse link channels
US6256487B1 (en) * 1998-09-01 2001-07-03 Telefonaktiebolaget Lm Ericsson (Publ) Multiple mode transmitter using multiple speech/channel coding modes wherein the coding mode is conveyed to the receiver with the transmitted signal
BRPI9915652B1 (en) * 1998-11-24 2016-09-06 Ericsson Telefon Ab L M process for performing discontinuous transmission in a communication system, and speech communication system
US6567473B1 (en) * 1999-03-12 2003-05-20 Aware, Inc. Method for seamlessly changing power modes in a ADSL system
FI19992166A (en) * 1999-10-08 2001-04-09 Nokia Networks Oy Method of changing the route of a data transmission and increasing the number of connections through a data transmission link
US7010001B2 (en) * 2000-01-10 2006-03-07 Qualcomm, Incorporated Method and apparatus for supporting adaptive multi-rate (AMR) data in a CDMA communication system
US6832195B2 (en) * 2002-07-03 2004-12-14 Sony Ericsson Mobile Communications Ab System and method for robustly detecting voice and DTX modes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0651531A2 (en) * 1993-10-29 1995-05-03 AT&T Corp. Communication technique employing variable information transmission rate function of quality
US6134220A (en) * 1994-04-13 2000-10-17 Alcatel Cit Method of adapting the air interface in a mobile radio system and corresponding base transceiver station, mobile station and transmission mode
EP0964540A2 (en) * 1998-05-21 1999-12-15 Texas Instruments Incorporated System for dynamic adaptation of data channel coding in wireless communications
EP0986206A1 (en) * 1998-08-13 2000-03-15 Alcatel A method of changing the encoding level of digital data transmitted between a transmitter and a receiver at a constant rate
WO2000047006A1 (en) * 1999-02-01 2000-08-10 Nokia Networks Oy Adaptation of codec operating modes in a telecommunication network

Also Published As

Publication number Publication date
WO2003019850A1 (en) 2003-03-06
US7403892B2 (en) 2008-07-22
ES2264363B2 (en) 2008-11-01
US20040267519A1 (en) 2004-12-30
DE10297176T5 (en) 2004-08-12
GB0400468D0 (en) 2004-02-11
GB2393368B (en) 2004-08-04
ES2264363A1 (en) 2006-12-16
SE0102849D0 (en) 2001-08-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20210822